Recent content by jtaz612

  1. J

    Calculating Work and Speed in a Horizontal Force System with a 10.0 kg Mass

    Ok thanks, I needed to clear the confusion of integrating force because I was unclear on impulse. You reply is much appreciated.
  2. J

    Calculating Work and Speed in a Horizontal Force System with a 10.0 kg Mass

    attempt Oh yes my attempt: You can determine the acceleration from using acc = Force/mass or: a = ( 10.0 + 2.00 t2 ) / 10.00 = 1 + 0.2 t2 dv = a dt and add these, by intergating, to get the total final speed. So: final speed = integral of...
  3. J

    Calculating Work and Speed in a Horizontal Force System with a 10.0 kg Mass

    A 10.0 kg mass, sitting on a frictionless horizontal surface experiences an external horizontal force which is a function of time : F(t) = (10.0 + 2.00 t2) Newtons (a) If the mass starts from rest and the force acts for 5.00 sec, what is the resulting speed of the mass? (b)Over...
  4. J

    How High Can a Model Rocket Go with a Specific Impulse of 100 Seconds?

    The height that a model rocket launched from Earth can reach can be estemated by assuming that the burn time is short compared to the total flight time, so for most of the flight the rocket is in free-fall. (This estimate neglects the burm time in calculations of both time and displacement. )...
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